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2023-12-11 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4

 kernel/arch/arm64/kernel/return_address.c
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@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * arch/arm64/kernel/return_address.c
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  *
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  * Copyright (C) 2013 Linaro Limited
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  * Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/export.h>
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@@ -21,16 +18,16 @@
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 	void *addr;
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 };
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-static int save_return_addr(struct stackframe *frame, void *d)
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+static bool save_return_addr(void *d, unsigned long pc)
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 {
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 	struct return_address_data *data = d;
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 	if (!data->level) {
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-		data->addr = (void *)frame->pc;
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-		return 1;
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+		data->addr = (void *)pc;
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+		return false;
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 	} else {
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 		--data->level;
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-		return 0;
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+		return true;
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 	}
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 }
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 NOKPROBE_SYMBOL(save_return_addr);
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@@ -43,12 +40,9 @@
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 	data.level = level + 2;
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 	data.addr = NULL;
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-	frame.fp = (unsigned long)__builtin_frame_address(0);
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-	frame.pc = (unsigned long)return_address; /* dummy */
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-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
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-	frame.graph = current->curr_ret_stack;
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-#endif
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-
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+	start_backtrace(&frame,
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+			(unsigned long)__builtin_frame_address(0),
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+			(unsigned long)return_address);
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 	walk_stackframe(current, &frame, save_return_addr, &data);
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 	if (!data.level)